Australia's housing market is getting rattled. The mortgage industry is in turmoil. Banks are battered by incessant revelations of misconduct. Home prices in the Sydney and Melbourne metros, after surging to an astounding degree, are deflating. And the once splendid and vast game of real-estate speculation just isn't fun anymore.

Lindsay David, of LF Economics in Sydney — who has long played a role in exposing misconduct in Australia's banking system including, in early 2016, by calling for a Royal Commission investigation into the mortgage sector — put some findings of his boots-on-the-ground analysis into a note to clients. Here are some of them:

1. Drop-off in Speculative Demand:

"We spent countless hours" in recent months "observing buyer turnouts to scheduled property inspections of houses for sale," he writes. "While there may still be a small sum of properties on market that continue to see very large turnouts, there was a clear visual drop-off of engaged interest from buyers and indeed 'property snoops' across the majority of properties for sale that we had observed."